How do I get positioned audio to fade volume?

Here is a link to the current build:

drive.google.com/file/d/1ZWudgOy5GSSwe5-9rPlCtZx99Y48qvwz/view

I followed the tutorials and the panning works but not the volume fading as you approach etc. I feel like there must be something simple I am missing. Audio volume does not change at all.

Thanks so much for any help,

Never mind figured it out! Just needed to turn up the roll off percent WAY up.